Cr2
O3
-
____________________
de
____________________
____________________
-
____________________
de
____________________
Hg2
O
-
____________________
de
____________________
I
-
____________________
de
____________________
Cr
O
-
____________________
de
____________________
II
-
____________________
de
____________________
Pt
O
-
____________________
de
____________________
II
-
____________________
de
____________________
Ni2
O3
-
____________________
de
____________________
III
-
____________________
de
____________________
Sn
O2
-
____________________
de
____________________
IV
-
____________________
de
____________________
Br2
O3
-
____________________
de
____________________
III
-
____________________
de
____________________
Si
O2
-
____________________
de
____________________
IV
-
____________________
de
____________________
